RIINHB411E — Construct artesian (flowing) aquifer bores

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What an assessment for RIINHB411E must cover

105 assessable components: 8 elements (49 performance criteria), 22 performance evidence and 31 knowledge evidence requirements, plus 3 foundation skills. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Plan and prepare for the construction of artesian (flowing) aquifer bores

1.1Obtain, interpret and confirm work requirements
1.2Access, interpret and apply artesian (flowing) aquifer bores construction documentation and confirm work activity is compliant
1.3Identify hazards and environmental issues, assess the risks and implement control measures in line with workplace procedures
1.4Select and wear personal protective equipment required for work activities
1.5Communicate with other personnel at site according to work requirements and confirm briefings and handover details are communicated and received
1.6Discuss scope of work with client and give technical advice, cost structure, workmanship warranty, quantity and quality of materials, construction standards and methods to be used and gain general agreement on drilling plan
1.7Complete required reports and provide reports, samples and strata logs, pump and development test results to relevant authorities as required

2 Design bores for artesian aquifer systems

2.1Determine required construction methods and drilling fluid program according to down-hole conditions and anticipated pressures
2.2Design bore according to environmental and work requirements
2.3Select a bore site that will prevent contamination and minimise interference with other bores
2.4Select likely water entry mechanism from the formation to the bore including open hole, slotted casing screens, gravel packs
2.6Calculate required artificial pack design parameters, and recommended annular thicknesses required
2.7Undertake calculations to determine appropriate screen/slot design parameters, including for diameter, length, aperture size
2.8Select required bore/surface casing types, size, strength and wall thicknesses for the anticipated ground/water quality and pressure conditions and any construction requirements
2.9Confirm all necessary materials anticipated for the job are available and on site prior to commencement of construction phase

3 Construct bores in artesian aquifer system

3.1Carry out any pre-start and start up procedures according to manufacturer specifications and workplace procedures
3.2Select, slot, assemble and insert casing and screens suitable for the formations in which they are deployed
3.3Select, mix and place grout or seal surface according to legislative and company requirements and manufacturer specifications
3.4Construct bore according to legislative requirements and workplace procedures
3.5Use, maintain, test and record nontoxic, removable drilling fluids and additives according to manufacturer specifications and environmental requirements
3.6Maintain plumbness and alignment of the hole within the required limitations and carry out a plumbness test where required
3.7Prepare for and recognise any symptoms of a formation kick and take action to control the bore
3.8Collect, store, record, label and transport formation and water samples according to licensing requirements
3.9Arrange for geophysical logging tools to be run in bore if required
3.10Determine aquifer formation grain size distribution from sieve analysis and interpret appropriate gravel pack and screen slot aperture dimensions for gravel packed wells
3.11Select and place artificial pack materials
3.12Remove drilling fluids from the bore to allow subsequent development
3.13Maintain tool string inventories according to workplace procedures

4 Construct bore headworks

4.1Construct headworks for bore including isolation valves to retain/control artesian flow and to permit independent testing of both pressure and flow without interference to reticulation system
4.2Identify and protect headworks of the bore
4.3Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns and damage
4.4Dispose of and neutralise wastewater or hazardous materials from site as required and complete restoration of the bore site camp facilities

5 Develop bore

4.1Use development techniques with care to prevent collapsing of casing or screens
4.2Undertake development until a continuous, clean supply if water is obtained according to site, contractual and regulatory requirements
4.3Measure/calculate and record standing and drawdown water levels
4.4Perform pump and/or development tests to estimate the sand content and sustainable yield of the bore

6 Disinfect/decontaminate bore and drilling equipment

6.1Determine and monitor potential contaminants of drilling equipment
6.2Disinfect and decontaminate bores and installed equipment constructed for potable supplies as required

7 Carry out bore maintenance and rehabilitation

7.1Carry out and shutdown procedures and secure according to manufacturer specifications and workplace procedures
7.2Undertake a process of diagnosis to determine likely cause of bore deterioration
7.3Devise a rehabilitation program according to environmental requirements

8 Decommission artesian wells with flowing and/or non-flowing elements

8.1Determine suitable decommissioning procedures and select required materials
8.2Carry out the decommissioning (abandonment) of artesian aquifer bores
8.3Place cement bridges at the top of the surface casing and at the surface casing shoe
8.4Verify position/location of hole for future reference
8.5Dispose of drill and other fluids safely according to environmental requirements and workplace procedures
8.6Record entire decommissioning procedure and details of bore cementing according to workplace procedures
8.7Complete bore completion report and submit to State/Territory Water Authority
8.8Carry out housekeeping requirements according to workplace procedures

Performance evidence

construct artesian (flowing) aquifer bores on at least two occasions, including:
designing the bore to ensure the exclusion of unsuitable waters
identifying and applying appropriate headworks design for class 3 bore applications
selecting a bore site to prevent contamination and minimise interference with other bores
selecting a water entry mechanism from the formation to the bore, including:
open hole
slotted casing screens
gravel packs
assembling and inserting casing and screens
selecting, mixing and placing grout or otherwise seal surface casing from 10 m into competent impermeable strata and back to the surface with a minimum sheath thickness of 20mm above maximum shoe of coupling joint diameter size
grouting to seal intermediate and/or inner production casing strings with a 15mm minimum thickness grout sheath or to seal selected zones so that the water from the production bore is drawn from one primary formation only (unless otherwise allowed by the permit)
maintaining, testing and recording fluid properties including viscosity, mud weight, filtration and sand content
maintaining plumbness and alignment of the hole
developing the bore until a continuous, clean supply of water is obtained
testing pumps and developments to estimate the sand content and sustainable yield of the bore.
During the above, the candidate must:
locate and apply relevant standards, legislation, documentation, policies and procedures
implement the requirements, procedures and techniques for constructing artesian (flowing) aquifer bores, including:
selecting and wearing required personal protective equipment
plotting and interpreting sieve analysis results onto graphs preventing the inter mixing of aquifers with different water quality and/or Standing Water Level
communicate clearly and concisely with clients, co-workers and management to receive and clarify work instructions and coordinate work activities prior to commencing
comply with written and verbal reporting requirements and procedures work.

Knowledge evidence

key legislation required to construct artesian (flowing) aquifer bores
key policies, procedures and established requirements for constructing artesian (flowing) aquifer bores, including those for:
Minimum Construction Requirements (MCR)
work health and safety
environmental issues
accidents and emergencies
afety data sheets (SDS)
fishing operations in regard to types of drilling being undertaken
housekeeping
key site information, including:
basic geological formations which permit groundwater movement, including soil and rock classifications
factors affecting groundwater quality for aquifer systems, including drillability and stability
key factors affecting work activities described in performance evidence above, including:
objectives of bore development
equipment characteristics, technical capabilities and limitations
safety hazards and sources of contamination when siting a bore
the necessity of having a signed agreement/contract with the client
the appropriate casing materials for various applications
wire-wound screens
drilling fluids, including testing and conditioning
grout placement methods and procedures including pressure grouting
results of sieve analysis
applications for natural pack, stabilising fill and artificial pack completion techniques
screen design parameters to ensure appropriate entrance velocities
characteristics of ‘good samples’ required for water well construction
ways in which sampling errors can occur
types of pathogens and contaminants including bacteria
key calculations for constructing artesian (flowing) aquifer bores, including those for:
hole, annular fill or pack materials and mud pit volume in cubic metres or litres
required artificial pack design parameters and recommended annular thickness required
appropriate screen/slot design parameters, including for diameter, length, aperture size.

Foundation skills

Reading: Identifies and interprets information from workplace procedures, policies and documentation
Numeracy: Identifies and comprehends relevant mathematical information in relation to constructing artesian (flowing) aquifer bores Estimates, accurately measures and calculates quantities of fluid volumes, up hole velocity, flow rates, density and viscosity
Oral communication: Presents information to others involved in work activity using industry specific vocabulary

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing RIINHB411E

What does an assessment tool for RIINHB411E need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for RIINHB411E needs to address all 105 unit components: 8 elements with 49 performance criteria, 22 performance evidence requirements, 31 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for RIINHB411E?

Auditori pulls the current release of RIINHB411E from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

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Can I check my existing RIINHB411E assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of RIINHB411E, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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